<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
         #box{
            height: 400px;
            width: 400px;
            border:5px solid brown;
           background-image: linear-gradient(to bottom , orange,yellow, purple,blue,pink);
        }
       
    </style>
</head>
<body>
    <div id="box"></div>
    <div id="box2"></div>
</body>
</html>